fletcher



D. G. FLETCHER.

Radiator.

w c z i a C a 0 00 F @IC fiQF 000$ U 0 Z Z UNITED STATES PATENT OFFICE.

D. G. FLETCHER, OF RACINE, l/VISCONSIN, ASSIGNOR 'IO HIMSELF AND JAMESYATES, OF SAME PLACE.

HEAT-RADIATOR.

Specification of Letters Patent No. 27,950, dated April 17, 1860.

To all whom it may concern:

Be it known that I, D. G. FLETCHER, of Racine, in the county of Racineand State of Wisconsin, have invented a new and useful Improvement inHeat-Radiators; and I do hereby declare that the following is a full,clear, and exact description thereof, reference being had to theaccompanying drawings, forming a part of this specification, in WhichFigure 1 represents a vertical diametrical section taken through myimproved heat radiator and draft regulating cylinder or drum. Thedirection of the heated air and smoke up through the same is indicatedby arrows. Fig. 2 is a horizontal section taken through Fig. 1, asindicated by the red line 50-20. In this figure the central register isshown partially open.

Similar letters of reference indicate corresponding parts in bothfigures.

This invention is an improvement in heat radiators, through which thesmoke and heated air, ascending from a furnace or ordinary stove,situated in the lower story of a building is to be conducted foreconomizing fuel by abstracting the heat from the proclucts ofcombustion in their upward passage, and radiating it into the room.

To enable those skilled in the art to fully understand my invention Iwill proceed to describe its construction and operation.

In the drawings, A represents a cylindrical drum with caps, B B, towhich the stove pipes are attached leading from a lower story to thechimney in the upper story.

C is a conical perforated interlining which increases in width from thelower cap, B, to about midway of the drum, the sides, O, of this liningthen continue up to the top or cap, B, parallel with the sides of thedrum, A, and connects with this drum by a cap plate a, the whole forminga space, E, which is wider between the bottom of the drum and thelining, C, than between said drum and lining C, as shown by Fig. 1.

F represents an ordinary register arranged within and near the top ofthe inner cylinder, C, having a sliding handle, I), for opening orclosing it, this is shown clearly in Fig. 2, above this register thecylinder, C, is perforated, as shown by Fig. 1.

G is a perforated band arranged suitably around and near the top of thecylinder, C, so that it (the band) will serve as a register for the fluespace, E, by entirely or partially opening the perforations in the headof the cylinder, C, above the register, F. c is a handle for moving theband, G.

The cylinders are to be made of sheet metal, while the register, F, maybe of cast metal, and the whole fitted up so as to adapt it to itsprevious requirements in a building.

The operation of my invention will be fully understood by the followingdescription: The register, F, is so arranged in the radiator that adirect draft may be obtained to the chimney when it is entirely open sothat, in warm weather, when the room in which the radiator is arrangedis not required to be heated, the smoke and heated air will passdirectly up through the smoke pipe to the chimney and the space, E,between the inner and outer cylinder being closed by its register at thetop of the drum, the air in this space will serve to a great extent as anon-conducting medium, and the heat will pass up the chimney withoutbeing radiated out in the room. In cold weather when the room is to beheated the radiation is controlled by partially opening the direct draftregister, F, and creating a draft through space, E, by opening theregister, Gr, so that the heated air, 620. will pass through the lowerperforations in the conical cylinder, C, up through the space, E, andout again through the perforations above the register, F; thus the draftwill be retarded, and, at the same time, the heated air will beconducted up between and from the bottom to the top of the twocylinders.

The object of giving a conical shape to the cylinder, C, is to allowfree draft into the space, E, in the lower part of the drum, so that theheat will be freely thrown to the outer radiating surface, namely, thecylinder, A.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

The arrangement and combination as herein shown and described of theperforated conical cylinder C, registers F, G, air space E, githin thedrum A, for. the purpose specifie D. G. FLETCHER.

Witnesses:

J. H. HINDs, JOHN B. ADAMS.

